Results 51 to 60 of about 92,623 (181)

Conceptualization of a Small, Uncrewed, Microwave‐Powered Aircraft

International Journal of Aerospace Engineering, Volume 2025, Issue 1, 2025.
This work conceptualizes wireless power transfer (WPT) between a tracking stationary ground transmitter and a mobile aircraft. Initial ground tests are performed to determine the viability of the Friis equation, using rectennas developed for operation at 2.45 GHz at 4 dBm of optimal input power.
Sameep Jagtap, Maya Rahaman-Noronha, William D. Kemp, Marco A. Antoniades, Goetz Bramesfeld, Muhammad Rizwan Mughal   +5 more
wiley   +1 more source

HELICOPTER ROTOR DESIGN

Journal of Industrial Design and Engineering Graphics, 2011
The objective of this paper is to analyze the role of helicopter rotor, to classify them by type, and to imagine new types of helicopter rotors that can equip future helicopters.
IONESCU Cristian Andrei
doaj  

Ventilator‐assisted preoxygenation in an aeromedical retrieval setting

Emergency Medicine Australasia, Volume 36, Issue 4, Page 596-603, August 2024.
Ventilator‐assisted preoxygenation (VAPOX) is a method of preoxygenation and apnoeic ventilation, prior to intubation. This article describes the use of VAPOX during intubation of critically unwell patients in aeromedical retrieval setting. Abstract Objective Ventilator‐assisted preoxygenation (VAPOX) is a method of preoxygenation and apnoeic ...
Akmez Latona, Richard Pellatt, David Wedgwood, Gerben Keijzers, Steven Grant   +4 more
wiley   +1 more source

DETERMINATION OF OPTIMAL AZIMUTH FOR MOUNTING ULTRALIGHT COAXIAL HELICOPTER BLADES

Advanced Engineering Research, 2011
The possibility of reducing vibration of the ultralight coaxial helicopter blades on the through harmonic wave by mounting blades on the optimal azimuth is shown.
Vitaly V. Dudnik, Vladimir A. Kolot
doaj  

Unmanned Helicopter Type Aircraft for the Pesticides and Fertilizers Application

Сельскохозяйственные машины и технологии, 2020
Digital agricultural production is based on robotic agricultural technologies for the use of pesticides and fertilizers using unmanned aerial systems, which are based on unmanned aerial vehicles for monitoring agricultural land, the pesticides ...
L. A. Marchenko, M. V. Myzin, I. V. Kuznetsov, T. V. Mochkova, A. Yu. Spiridonov   +4 more
doaj   +1 more source

A beginner's guide to infrastructure‐less networking concepts

IET Networks, Volume 13, Issue 1, Page 66-110, January 2024.
Infrastructure‐less networks connect communication devices end‐to‐end by managing links and routes independent on fixed networking facilities, relying on dedicated protocols running on end‐user devices. The authors describe the different networking concepts of infrastructure‐less networks by looking at the main properties, common applications, ongoing ...
Anna Förster, Jens Dede, Andreas Könsgen, Koojana Kuladinithi, Vishnupriya Kuppusamy, Andreas Timm‐Giel, Asanga Udugama, Andreas Willig   +7 more
wiley   +1 more source

DETERMINATION OF OPTIMAL AZIMUTH FOR MOUNTING ULTRALIGHT COAXIAL HELICOPTER BLADES

Вестник Донского государственного технического университета, 2018
The possibility of reducing vibration of the ultralight coaxial helicopter blades on the through harmonic wave by mounting blades on the optimal azimuth is shown.
Vitaly V. Dudnik, Vladimir A. Kolot
doaj  

Comprehensive and Validated Computational Investigations of Structural Integrity, Aerodynamic Behavior, and Its Turbulence Characteristics on Agricultural Drone with and without Payload Devices

Journal of Engineering, Volume 2024, Issue 1, 2024.
In recent years, multirotor unmanned aerial vehicles (MRUAVs) have seen increased investment and deployment for various novel uses, including intruder surveillance, agro farming, and crack detection in severe environments. An identical line of inquiry motivates this work, which aims to better use MRUAVs for agriculture.
Beena Stanislaus Arputharaj, Shyam Sundar Jayakumar, Senthil Kumar Solaiappan, Vijayanandh Raja, Parvathy Rajendran, Maheswari Krishnamoorthy, Hari Prasath Jeyaraj, Senthil Kumar Madasamy, Ragavendra Thaiyan Rajendran, Ali Mahmood Ahmed, Oronzio Manca   +10 more
wiley   +1 more source

Power Flow Analysis of the Main Reducing Gear of Coaxial Counter-rotating High-speed Helicopter

Jixie chuandong, 2018
A mechanism scheme of main reducing gear of coaxial counter-rotating high-speed helicopter is studied,and a rapid evaluation on the gear power flow for designers is provided.
Zhang Shifei, Chen Peng, Wu Wenmin, Xia Fuchun, Liu Lei   +4 more
doaj  

Numerical study of helicopter airframe aerodynamics combined with coaxial main rotor using the URANS method

Научный вестник МГТУ ГА
The work is dedicated to numerical modeling of Kamov Ka-226 helicopter aerodynamics for isolated helicopter airframe and helicopter airframe with coaxial main rotor.
S. G. Konstantinov, P. V. Makeev, A. I. Shomov   +2 more
doaj   +1 more source